Fig. 4.
Survival curves for NPC patients with different tumor volumes in recurrent T2–4 groups. a, recurrent T2; b, recurrent T3; c, recurrent T4
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.